how do you explain it?

Science
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referencing newtons first law of motion explain projectile motion.

May 27th, 2015

According to Newton's first law, an object will maintain the constant velocity motion (or at rest) in a direction if it is subjected no net force in that direction.   In projectile motion, in the horizontal direction, the net force =0, thus we have Vx =Vx0, i.e. Vx does not change during the motion. 

May 27th, 2015

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May 27th, 2015
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May 27th, 2015
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